单词	ultralow frequency
释义	ultralow frequency noun : a radio frequency in the lower range of the radio spectrum from about 300 Hz to 3 kHz Communicating with subs thousands of miles away, under thousands of feet of ocean, requires ultralow frequencies … Noah Shachtman, Wired, August 2009 —abbreviation ULF see Radio Frequencies Table Word History First Known Use 1994, in the meaning defined above
随便看	chapt chaptalisation chaptalisations chaptalise chaptalised chaptalises chaptalising chaptalization chaptalizations chaptalize chaptalized chaptalizes chaptalizing chapter Chapter 11 Chapter 11s chapter and verse chapter book chapter head chapter house chapter of accidents chaptered chapterhouses chaptering chapters

英语词典包含469781条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。